2,4,5-TP (Silvex)
California Water Service (CWS) - Salinas
2(2,4,5-trichlorophenoxy) propionic acid (2,4,5-TP or Silvex) is a cancer-causing herbicide banned in the U.S. in 1985 because of its toxicity. It is still detected as a groundwater contaminant in areas where it was sprayed or stored.
131
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2012 | ND | 18 | 0 | ND |
| 2013 | ND | 66 | 0 | ND |
| 2014 | ND | 14 | 0 | ND |
| 2015 | ND | 7 | 0 | ND |
| 2016 | ND | 21 | 0 | ND |
| 2017 | ND | 5 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 3 ppb
The EWG Health Guideline of 3 ppb for 2,4,5-TP was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 50 ppb
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2012-02-01 | 9590-103-1120 | ND |
| 2012-02-01 | 9590-106-1002 | ND |
| 2012-02-01 | 9590-123-1328 | ND |
| 2012-02-02 | 9590-102-1145 | ND |
| 2012-03-08 | 9590-046-1105 | ND |
| 2012-05-03 | 9590-106-1155 | ND |
| 2012-05-10 | 9590-103-1102 | ND |
| 2012-05-17 | 9590-104-1350 | ND |
| 2012-05-22 | 9590-102-1122 | ND |
| 2012-05-22 | 9590-123-1206 | ND |
| 2012-08-16 | 9590-102-0945 | ND |
| 2012-08-16 | 9590-103-1418 | ND |
| 2012-08-23 | 9590-123-1147 | ND |
| 2012-08-30 | 9590-106-1316 | ND |
| 2012-11-14 | 9590-102-1122 | ND |
| 2012-11-14 | 9590-103-0949 | ND |
| 2012-11-15 | 9590-106-1308 | ND |
| 2012-11-19 | 9590-123-1025 | ND |
| 2013-01-10 | 9590-005-1102 | ND |
| 2013-01-10 | 9590-008-1014 | ND |
| 2013-01-10 | 9590-009-1431 | ND |
| 2013-01-30 | 9590-010-1132 | ND |
| 2013-02-20 | 9590-103-1408 | ND |
| 2013-02-20 | 9590-104-0955 | ND |
| 2013-02-21 | 9590-020-1025 | ND |
| 2013-02-21 | 9590-046-1147 | ND |
| 2013-02-21 | 9590-102-1011 | ND |
| 2013-02-26 | 9590-018-1049 | ND |
| 2013-02-26 | 9590-019-1439 | ND |
| 2013-02-27 | 9590-106-1257 | ND |
| 2013-02-27 | 9590-123-1148 | ND |
| 2013-02-28 | 9590-015-1132 | ND |
| 2013-03-05 | 9590-014-1148 | ND |
| 2013-03-05 | 9590-022-1437 | ND |
| 2013-03-05 | 9590-024-1509 | ND |
| 2013-03-05 | 9590-026-1335 | ND |
| 2013-03-07 | 9590-017-1018 | ND |
| 2013-03-07 | 9590-023-1340 | ND |
| 2013-03-07 | 9590-027-1040 | ND |
| 2013-03-27 | 9590-006-1408 | ND |
| 2013-04-04 | 9590-028-1338 | ND |
| 2013-04-04 | 9590-030-1001 | ND |
| 2013-04-04 | 9590-037-1021 | ND |
| 2013-04-11 | 9590-043-1432 | ND |
| 2013-04-12 | 9590-041-1201 | ND |
| 2013-04-30 | 9590-029-1429 | ND |
| 2013-05-02 | 9590-106-1024 | ND |
| 2013-05-09 | 9590-102-1258 | ND |
| 2013-05-14 | 9590-103-1309 | ND |
| 2013-05-14 | 9590-123-1604 | ND |
| 2013-07-08 | 9590-005-1359 | ND |
| 2013-07-10 | 9590-008-1400 | ND |
| 2013-07-10 | 9590-009-1102 | ND |
| 2013-07-17 | 9590-006-1351 | ND |
| 2013-07-17 | 9590-010-1138 | ND |
| 2013-08-07 | 9590-106-1222 | ND |
| 2013-08-07 | 9590-123-1028 | ND |
| 2013-08-08 | 9590-019-1204 | ND |
| 2013-08-08 | 9590-102-1308 | ND |
| 2013-08-08 | 9590-103-1021 | ND |
| 2013-08-16 | 9590-020-1401 | ND |
| 2013-08-20 | 9590-104-1054 | ND |
| 2013-08-22 | 9590-014-1028 | ND |
| 2013-08-22 | 9590-017-1312 | ND |
| 2013-08-22 | 9590-046-1023 | ND |
| 2013-08-27 | 9590-015-1243 | ND |
| 2013-08-27 | 9590-018-1310 | ND |
| 2013-09-11 | 9590-026-1505 | ND |
| 2013-09-13 | 9590-022-1320 | ND |
| 2013-09-18 | 9590-024-1456 | ND |
| 2013-09-18 | 9590-027-1014 | ND |
| 2013-09-20 | 9590-023-1601 | ND |
| 2013-10-11 | 9590-030-1305 | ND |
| 2013-10-17 | 9590-029-1148 | ND |
| 2013-10-22 | 9590-028-1125 | ND |
| 2013-10-22 | 9590-043-1425 | ND |
| 2013-10-23 | 9590-037-1125 | ND |
| 2013-10-23 | 9590-041-1115 | ND |
| 2013-10-29 | 9590-039-1407 | ND |
| 2013-11-06 | 9590-106-1545 | ND |
| 2013-11-07 | 9590-102-1311 | ND |
| 2013-11-07 | 9590-103-1339 | ND |
| 2013-11-14 | 9590-123-1339 | ND |
| 2013-12-18 | 9590-131-1118 | ND |
| 2014-02-11 | 9590-039-1050 | ND |
| 2014-02-12 | 9590-102-1323 | ND |
| 2014-02-12 | 9590-103-1348 | ND |
| 2014-02-12 | 9590-123-0938 | ND |
| 2014-02-19 | 9590-106-1145 | ND |
| 2014-05-07 | 9590-102-1429 | ND |
| 2014-05-07 | 9590-103-1445 | ND |
| 2014-05-13 | 9590-123-1035 | ND |
| 2014-08-04 | 9590-102-0912 | ND |
| 2014-08-04 | 9590-103-1409 | ND |
| 2014-08-04 | 9590-123-0941 | ND |
| 2014-11-12 | 9590-102-1032 | ND |
| 2014-11-12 | 9590-103-0947 | ND |
| 2014-11-12 | 9590-123-1410 | ND |
| 2015-02-07 | 9590-102-1107 | ND |
| 2015-02-07 | 9590-103-1043 | ND |
| 2015-02-07 | 9590-123-1141 | ND |
| 2015-04-21 | 9590-008-1355 | ND |
| 2015-05-14 | 9590-102-1557 | ND |
| 2015-05-14 | 9590-103-1503 | ND |
| 2015-05-14 | 9590-123-1438 | ND |
| 2016-01-07 | 9590-009-1050 | ND |
| 2016-01-07 | 9590-020-1011 | ND |
| 2016-01-20 | 9590-018-1245 | ND |
| 2016-02-04 | 9590-027-0947 | ND |
| 2016-02-09 | 9590-104-1213 | ND |
| 2016-02-10 | 9590-006-1209 | ND |
| 2016-02-22 | 9590-024-1520 | ND |
| 2016-03-01 | 9590-037-1247 | ND |
| 2016-03-03 | 9590-015-1427 | ND |
| 2016-04-05 | 9590-022-1345 | ND |
| 2016-04-27 | 9590-041-1040 | ND |
| 2016-05-03 | 9590-026-1259 | ND |
| 2016-05-04 | 9590-017-1425 | ND |
| 2016-06-28 | 9590-023-1353 | ND |
| 2016-08-02 | 9590-019-1103 | ND |
| 2016-09-14 | 9590-106-0908 | ND |
| 2016-09-20 | 9590-046-1109 | ND |
| 2016-10-05 | 9590-029-1004 | ND |
| 2016-10-05 | 9590-030-0905 | ND |
| 2016-12-07 | 9590-043-1444 | ND |
| 2016-12-29 | 9590-008-1413 | ND |
| 2017-01-19 | 9590-014-1048 | ND |
| 2017-03-02 | 9590-132-1100 | ND |
| 2017-04-05 | 9590-005-1428 | ND |
| 2017-11-21 | 9590-131-1240 | ND |
| 2017-12-14 | 9590-132-1456 | ND |